DE2633272A1 - Dual-pressure rectification using two columns - the first having the high-pressure stage and part of the low-pressure - Google Patents

Dual-pressure rectification using two columns - the first having the high-pressure stage and part of the low-pressure

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Publication number
DE2633272A1
DE2633272A1 DE19762633272 DE2633272A DE2633272A1 DE 2633272 A1 DE2633272 A1 DE 2633272A1 DE 19762633272 DE19762633272 DE 19762633272 DE 2633272 A DE2633272 A DE 2633272A DE 2633272 A1 DE2633272 A1 DE 2633272A1
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DE
Germany
Prior art keywords
column
pressure
pressure stage
low
rectification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19762633272
Other languages
German (de)
Inventor
Wolfgang Ing Grad Dichtl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Priority to DE19762633272 priority Critical patent/DE2633272A1/en
Publication of DE2633272A1 publication Critical patent/DE2633272A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
    • F25J3/0219—Refinery gas, cracking gas, coke oven gas, gaseous mixtures containing aliphatic unsaturated CnHm or gaseous mixtures of undefined nature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
    • B01D3/146—Multiple effect distillation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G7/00—Distillation of hydrocarbon oils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0295—Start-up or control of the process; Details of the apparatus used, e.g. sieve plates, packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04793—Rectification, e.g. columns; Reboiler-condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04878—Side by side arrangement of multiple vessels in a main column system, wherein the vessels are normally mounted one upon the other or forming different sections of the same column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/12—Refinery or petrochemical off-gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/06—Lifting of liquids by gas lift, e.g. "Mammutpumpe"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/60—Expansion by ejector or injector, e.g. "Gasstrahlpumpe", "venturi mixing", "jet pumps"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/40—Vertical layout or arrangement of cold equipments within in the cold box, e.g. columns, condensers, heat exchangers etc.

Abstract

Dual-pressure rectification is carried out in two distillation columns placed side-by-side. The first contains the high-pressure stage and the lower portion of the low-pressure stage. The second contains the remainder of the low-pressure stage. Used for dual-pressure distn. systems for gas sepn. such as for air sepn. or crude oil distn. Economy in capital cost, is achieved, by minimising overall height, and economy in operation, by minimising liq. pumping cost.

Description

Rektifiziereinrichtung Rectifier

Die ErEindung betrifft eine Rektifiziereinrichtung mit zwei Druckstufen, bei der zwei Rektifiziersäulen nebeneinander angeordnet sind, und die erste Säule die Hochdruckstufe enthält.The invention relates to a rectifying device with two pressure stages, in which two rectifying columns are arranged side by side, and the first column contains the high pressure stage.

Es ist bekannt, die Hochdruck- und die Niederdruckstufe in einer Säule, verbunden durch einen Kondensator, zusammenzufassen. Diese Doppelsäure ermöglicht beispielsweise bei der Luftzerlegung die gleichzeitige Gewinnung von Reinstickstoff und Reinsauerastoff in hoher Ausbeute. Für viele Anwendungsfälle ist es nicht möglich, beide Druckstufen übereinander anzuordnen, da die Säule zu hoch wird. Durch die DT-PS 725 156 ist bekannt geworden, die Doppelsäure so zu teilen, daß die erste Säule nur die Hochdruck- und die zweite Säule nur die Niederdruckstufe enthält. Es erfordert allerdings einen großen apparativen Aufwand, diese beiden Säulen zu verbinden. Es sind nicht nur Verbindungsleitungen, sondern auch störanfällige Pumpen nötig, um die erzeugten Produkte von einer Säule zur anderen zu leiten. It is known that the high pressure and the low pressure stage in one Column connected by a condenser. This double acid makes it possible For example, in the case of air separation, the simultaneous extraction of pure nitrogen and pure oxygen in high yield. For many applications it is not possible to arrange both pressure levels one above the other, there the column too high will. DT-PS 725 156 made it known to divide the double acid in such a way that that the first column only the high pressure and the second column only the low pressure stage contains. However, it requires a large amount of equipment, these two Connecting pillars. There are not only connecting lines, but also susceptible to failure Pumps are required to convey the produced products from one column to another.

Aufgabe der Erfindung ist es daher, eine Rektifiziereinrichtung mit zwei getrennten Säulen zu entwickeln, bei der neben der niedringen Bauhöhe der Säulen der apparative Aufwand so gering wie möglich gehalten und die Ausbeute nicht versehlechtert wird. The object of the invention is therefore to provide a rectifying device with to develop two separate columns, in addition to the low height of the columns the outlay on equipment is kept as low as possible and the yield is not impaired will.

Die Aufgabe wird erfindungsgemäß dadurch gekennzeichnet, daß die erste Säule zusätzlich einen Teil der Wiederdruckstufe bis zu derjenigen Stelle enthält, an der die Zuführung für die Sumpfflüssigkeit aus der Hochdruckstufe angeordnet ist, und die zweite Säule den restlichen Teil der Niederdruckstufe enthält. The object is characterized in that the first column additionally a part of the reprint stage up to that point contains, on which the feed for the sump liquid from the high pressure stage is arranged and the second column contains the remainder of the low pressure stage.

Im Gegensatz zu der bekannten Anordnung von zwei nebeneinanderstehenden Säulen, bei der Hochdruck- und Niederdruckstuffe völlig getrennt sind, wird bei der erfindungsgemäßen Ausführung der Rektifiziereinrichtung somit nur ein Teil der Niederdruckstufe einer Doppelsäule abgetrennt. Dadurch ergibt sich ein bedeutend geringerer apparativer Aufwand zur Verbindung der beiden Säulen. Durch die erfindungsgemäße Trennung der Niederdie in der zweiten Säule gewonnenen Produkte in die erste Säule zu leiten. In contrast to the known arrangement of two side by side Columns in which the high-pressure and low-pressure stages are completely separate is used in the inventive design of the rectifying device thus only part of the Separated low pressure stage of a double column. This results in a significant less expenditure on equipment for the connection of the two pillars. By separating the Niederdie obtained in the second column according to the invention To direct products into the first pillar.

Der apparative Aufwand wird dann am geringsten, wenn die obere Begrenzung der zweiten Säule ungefähr auf gleicher H8he liegt wie die obere Begrenzung der ersten Säule. The outlay on equipment is lowest when the upper limit of the second column is approximately at the same level as the upper limit of the first pillar.

Besonders vorteilhaft ist es, wenn der Sumpf der zweiten Säule über eine Mamnnitpumpe mit dem Kopf der ersten Säule und das GaszufUhrungsrohr der Mammutpumpe mit dem Sumpf der ersten Säule über ein Entspannungsventil in Verbindung steht. It when the bottom of the second column is particularly advantageous a mammoth pump with the head of the first column and the gas supply pipe of the mammoth pump communicates with the sump of the first column via an expansion valve.

Durch die Ausbildung der Einspeiseleitung als Man-utpumpe kann die Flüssigkeit, die von der zweiten Säule kommt, ohne weitere Hilfenergie in den Kopf der ersten Säule gefördert werden. By designing the feed line as a man-ut pump, the Liquid coming from the second column into the head without any further auxiliary energy of the first pillar.

Damit entfällt die sonst übliche Verwendung einer störanfälligen Kreisel- oder Kolbenpumpe.This eliminates the usual use of a fault-prone gyro or piston pump.

Die Anwendung der Erfindung ist besonders günstig bei Proekten, bei denen eine vorgeschriebene Bauhdhe, beispielsweise aufgrund von Schwankungen des Untergrunds oder zu hoher Windkräfte eingehalten werden muß. Dies gilt nicht nur f Luftzerlegungsanlagen, sondern auch für Säulen, die für die Trennung von Erdöl in einzelne Fraktionen konstruiert sind. The application of the invention is particularly beneficial in projects which have a prescribed construction height, for example due to fluctuations in the Underground or excessive wind forces must be observed. This is not only true f air separation units, but also for columns used for the separation of petroleum are constructed in individual fractions.

Inder Figur ist ein Beispiel für eine erfindungsgemäße Vorrichtung im querschnitt schematisch dargestellt. In the figure is an example of a device according to the invention shown schematically in cross section.

In der Figur ist eine erste Säule 1 mit Hochdruckstube A und einem darüberliegendem Kondensator 3 dargestellt. Über dem Kondensator 3 befindet sich der Teil B der Niederdruckstufe. In the figure is a first column 1 with a high pressure chamber A and a overlying capacitor 3 shown. Above the capacitor 3 is located Part B of the low pressure stage.

Der restliche Teil C der Niederdruckstufe ist ifl in einer zweiten Säule 2 untergebracht. Der obere Abschluß der beiden Säulen liegt ungefähr auf gleicher Höhe.The remaining part C of the low-pressure stage is ifl in a second Pillar 2 housed. The top of the two columns is roughly on the same level Height.

Durch eine Zuführung 4 wird unzerlegtes Gas oberhalb des Sumpfes der eraten Spule 1 eingeführt und mit einem Teil der im Kondensator 3 gesammelten Füssigkeit berieselt, die bei 5 unterhalb des Kondensators 3 aufgegeben wird.Der restliche Anteil der im Kondensator 3 gesammelten Flüssigkeit wird über eine Leitung 6 nach einem Entspannungsventil 7 auf den Kopf 8 der zweiten Säule 2 gegeben. Über den Kopf 8 der zweiten Säule 2 wird das reine, leichtere Produkt des Gasgemisches abgezogen. Through a feed 4, undecomposed gas is above the sump the eraten coil 1 introduced and with a part of the collected in the capacitor 3 Liquid sprinkled, which is applied at 5 below the condenser 3 the remaining portion of the liquid collected in the condenser 3 is passed through a line 6 placed on the head 8 of the second column 2 after an expansion valve 7. Above the head 8 of the second column 2 is the pure, lighter product of the gas mixture deducted.

Das gasförmige Produkt vom Kopf der ersten Säule s wird der zwei ten Säule 2 über eine Zuführung 9 oberhalb des Sumpfes der zweiten Säule 2 zugeleitet. Die sich in der zweiten Säule 2 sammelnde Flüssigkeit wird durch eine Zuführung 10 mit dem Kopf der ersten Säule 1 in Verbindung gebracht. In diese Zufuhrung mündet ein Rohr 11, das über ein Entspannungsventil 12 mit dem Sumpf der ersten Säule 1 in Verbindung steht. Die Rohre 10 und 11 wirken zusammen als Mammutpumpe. Auf der Höhe des Kondensators 3 der ersten Sule t wird das reine, schwerere Produkt des Gasgemisches über eine Leitung 13 abgezogen.The gaseous product from the top of the first column becomes the second Column 2 is fed to the second column 2 via a feed 9 above the sump. The liquid collecting in the second column 2 is fed through a feed 10 associated with the head of the first column 1. In this feed opens a pipe 11 which, via an expansion valve 12, connects to the sump of the first column 1 communicates. The tubes 10 and 11 act together as a mammoth pump. At the level of the capacitor 3 of the first column t is the pure, heavier product of the gas mixture drawn off via a line 13.

Claims (3)

PatentansprUche !. Rektifizierung mit zwei Druckstufen, bei der zwei Rektifikationssäulen nebeneinander angeordnet sind und die erste Säule die Hochdruckstufe enthalt, dadurch æekennzeichnet, daß die erste Säule zusätzlich einen Teil der Niederdruckstufe bis zu derjenigen Stelle enthält, an der die Zurführung fUr die Sumpfflüssigkeit aus der Hochdruckstufe angeordnet ist, und die zweite Säule der restlichen Teil der Niederunckstufe enthält. Patent claims!. Rectification with two pressure levels, with the two Rectification columns are arranged side by side and the first column is the high pressure stage contains, characterized in that the first column also includes part of the low-pressure stage up to the point at which the feed for the sump liquid from the high pressure stage is arranged, and the second column of the remaining part the lower stage contains. 2. Rektifizierung nach Anspruch 1, dadurch gekennzeichnet, daß die obere Begrenzung der zweiten Säule ungegähr auf gleicher Höhe liegt wie die obere Begrenzung der ersten Säule.2. rectification according to claim 1, characterized in that the The upper limit of the second column is approximately at the same level as the upper one Limitation of the first pillar. 3. Rektifiziereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Sumpf der zweiten Säule über eine Mammutpumpe mit dem Kopf der ersten Säule und das Gaszuführungsrohr der Mammutpumpe mit dem Sumpf der ersten Säule über ein Entspannungsventil in Verbindung steht.3. Rectifying device according to claim 1 or 2, characterized in that that the sump of the second column via a mammoth pump to the head of the first column and the gas supply pipe of the mammoth pump with the sump of the first column via a Relief valve is in communication.
DE19762633272 1976-07-23 1976-07-23 Dual-pressure rectification using two columns - the first having the high-pressure stage and part of the low-pressure Withdrawn DE2633272A1 (en)

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Application Number Priority Date Filing Date Title
DE19762633272 DE2633272A1 (en) 1976-07-23 1976-07-23 Dual-pressure rectification using two columns - the first having the high-pressure stage and part of the low-pressure

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823606A2 (en) * 1996-08-07 1998-02-11 Air Products And Chemicals, Inc. Process to produce nitrogen using a double column plus an auxiliary low pressure separation zone
EP0870524A1 (en) * 1997-04-11 1998-10-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plant for separating a gas mixture by distillation
US6205815B1 (en) 1997-04-11 2001-03-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plant for separation of a gas mixture by distillation
EP0567360B2 (en) † 1992-03-24 2002-06-12 L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Process and installation for the transfer of a liquid
FR2853406A1 (en) * 2003-04-01 2004-10-08 Air Liquide Procedure for separating air by cryogenic distillation uses two-column separator and pressure reducing valve opening at set pressure
FR2853405A1 (en) * 2003-04-01 2004-10-08 Air Liquide Cryogenic distillation air separation procedure and plant uses lightening gas formed at least partly from purging gas drawn from vaporizer-condenser
FR2918162A1 (en) * 2007-03-12 2009-01-02 Air Liquide Air separation apparatus for cold box, has liquid supplying unit supplying liquid from head of medium-pressure column to subcooler and elongated shape member, and gas supplying unit supplying gas from head of member to subcooler

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567360B2 (en) † 1992-03-24 2002-06-12 L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Process and installation for the transfer of a liquid
EP0823606A2 (en) * 1996-08-07 1998-02-11 Air Products And Chemicals, Inc. Process to produce nitrogen using a double column plus an auxiliary low pressure separation zone
EP0823606A3 (en) * 1996-08-07 1998-10-07 Air Products And Chemicals, Inc. Process to produce nitrogen using a double column plus an auxiliary low pressure separation zone
EP0870524A1 (en) * 1997-04-11 1998-10-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plant for separating a gas mixture by distillation
FR2761897A1 (en) * 1997-04-11 1998-10-16 Air Liquide INSTALLATION FOR SEPARATING A GAS MIXTURE BY DISTILLATION
US6205815B1 (en) 1997-04-11 2001-03-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plant for separation of a gas mixture by distillation
US6272883B2 (en) 1997-04-11 2001-08-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plant for separation of a gas mixture by distillation
FR2853406A1 (en) * 2003-04-01 2004-10-08 Air Liquide Procedure for separating air by cryogenic distillation uses two-column separator and pressure reducing valve opening at set pressure
FR2853405A1 (en) * 2003-04-01 2004-10-08 Air Liquide Cryogenic distillation air separation procedure and plant uses lightening gas formed at least partly from purging gas drawn from vaporizer-condenser
FR2918162A1 (en) * 2007-03-12 2009-01-02 Air Liquide Air separation apparatus for cold box, has liquid supplying unit supplying liquid from head of medium-pressure column to subcooler and elongated shape member, and gas supplying unit supplying gas from head of member to subcooler
WO2008110732A3 (en) * 2007-03-12 2010-03-11 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and device for separating air by cryogenic distillation
CN102016467A (en) * 2007-03-12 2011-04-13 乔治洛德方法研究和开发液化空气有限公司 Method and device for separating air by cryogenic distillation

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